<html>
  <head>
    <script type="application/ld+json">
    {
      "@context": {"@vocab": "http://example/"},
      "comment-start": "<\!--",
      "comment-end": "--\>",
      "script-start": "<\ScRiPt>",
      "script-end": "<\/sCrIpT>"
    }
    </script>
  </head>
</html>